US4046611A - Manufacture of cushions - Google Patents

Manufacture of cushions Download PDF

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Publication number
US4046611A
US4046611A US05/540,555 US54055575A US4046611A US 4046611 A US4046611 A US 4046611A US 54055575 A US54055575 A US 54055575A US 4046611 A US4046611 A US 4046611A
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United States
Prior art keywords
cloth
frame
peripheral
mold
pocket
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Expired - Lifetime
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US05/540,555
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English (en)
Inventor
Joseph F. Sanson
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Individual
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Individual
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Filing date
Publication date
Priority claimed from FR7401274A external-priority patent/FR2257536A1/fr
Priority claimed from FR7412661A external-priority patent/FR2267280A2/fr
Application filed by Individual filed Critical Individual
Priority to US05/804,871 priority Critical patent/US4137030A/en
Application granted granted Critical
Publication of US4046611A publication Critical patent/US4046611A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/261—Handling means, e.g. transfer means, feeding means
    • B29C51/262—Clamping means for the sheets, e.g. clamping frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
    • B29C44/146—Shaping the lining before foaming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/002—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor characterised by the choice of material
    • B29C51/004—Textile or other fibrous material made from plastics fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/04—Combined thermoforming and prestretching, e.g. biaxial stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/04—Combined thermoforming and prestretching, e.g. biaxial stretching
    • B29C51/06—Combined thermoforming and prestretching, e.g. biaxial stretching using pressure difference for prestretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/14—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets
    • B29C51/145—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets having at least one layer of textile or fibrous material combined with at least one plastics layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/771—Seats
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S297/00—Chairs and seats
    • Y10S297/01—Foam

Definitions

  • This invention relates to the manufacture of cushions and in particular to a method of manufacturing cushions of flexible foamed plastics material with an integrated cloth cover.
  • the cushion is of foamed polyurethane
  • the reaction mentioned above causes expansion of the mass inside the mould, and its adherance to the integrated cover is obtained, in general, upon polymerization of this foam. It is possible to then use the marginal part of cloth located between the frame and the mould for securing the cushion thus obtained to its support.
  • the play thus provided at the level of the frames does not allow sufficient tightness to be obtained between these frames and the moulds, which requires that these moulds are constantly maintained under vacuum throughout the reaction and the consecutive polymerization of the foams, and also has the disadvantage of reducing the vacuum, which prevents perfect application of the cloths to the inner wall of the moulds.
  • a cloth acted upon only by the vacuum applied to its lower face does not in general undergo a suitable sliding throughout the periphery of the respective frames, and frequently plaits are formed, particularly at the corners of the moulds, which makes this method difficult to exploit on industrial scale.
  • the present invention in one aspect provides a method of manufacturing a flexible cushion of foamed plastics material with an integrated cloth cover, comprising forming under vacuum to apply the cloth cover to the inner wall of a mould, and casting a foamable reactive resin mixture capable of forming a resilient cellular thermoset resin wherein, before vacuum forming, the cover in the mould the cloth is preformed into a pocket having a peripheral flange, and wherein the periphery or flange of the pocket is gripped in a frame which allows the cloth to slide inwards without substantial stretching and undergoes at the level of the frame a peripheral shrinkage while avoiding plait formation, the cloth thus shaped being then fixed at the level of the frame.
  • the cloth for forming this cover undergoes a preliminary shaping through suitable means capable of causing peripheral sliding of the cloth inside a frame which provides the required play and its partial stamping in the form of a pocket, without appreciable lengthening or stretching of the yarns forming the cloths, as for example knitted fabric.
  • the cloth forming this pocket could have an average fibre density higher than that of the starting cloth.
  • the yarns forming the periphery of the pocket are fixed to each other by welding or fusing carried out by means of welding electrodes incorporated in the frame.
  • the same frames may be used for the pre-moulding and the forming under vacuum, the frames being provided with a sliding play or being tight, but in general it is more advantageous to provide, for the forming under vacuum, spacial tight frames and moulds having tight cases and quick-disconnect valve connections which allow these moulds to be disengaged from the vacuum system when the cloth is applied to the inner wall of the mould, which provides an arrangement for expediting production.
  • the cloth stamping is terminated by peripheral contraction before attaining the limit at which plaits would form so that a residual margin of contraction is maintained which then allows the peripheral part of the cover to follow the possible shrinkage after casting of the polyurethane foam, with no plaits being produced, although this peripheral part has not undergone elastic stretching during the manufacture of the cushions.
  • the means for carrying out this improved modification comprise, for each cloth used, the preliminary determination by means of a frame of circular shape of a coefficient of maximum peripheral contraction of the cloth, and the further determination of a slightly lower coefficient of optimum peripheral contraction, to be adopted in practice for limiting the pre-moulding of the rough-shaping, in such a way that in the sequence of the operations concerning the manufacture of the cushions, the possible shrinkage of polyurethane foam cannot lead to the formation of plaits.
  • the homothety centre is located in a plane located at equal distances from the longitudinal borders of the cushion, the thickness of this cushion varying very little in the transverse direction.
  • the distance from the homothety centre to the part of cloth located in front of the cushion is greater than its distance to the part located at the rear of this cushion, the ratio between these two distances being equal to the ratio of the corresponding thicknesses provided at the front of and at the rear of the cushion, so that during pre-moulding of the rough-shaping the sliding is greater at the front than at the back with respect to the cushion, and equal for example to twice the sliding at the rear or back, and the respective lengths of the corresponding slots can be arranged one on the extension of the other and chosen in the same ratio. Moreover, all the slots are concurrent and pass through the homothety centre.
  • the invention in another aspect provides apparatus for carrying out the preferred embodiment of the method according to the first aspect of the invention comprising a measuring device having two superimposed circular frames for determining the said coefficient of maximum peripheral contraction; a device for pre-forming rough-shapings which comprises two superimposed frames of shape in accordance with that of the cushions to be manufactured; a guide device for radially displacing towards the homothety centre needles crossing the cloth of the rough-shapings, the said guide device having abutments limiting the said displacement corresponding to a constant homothety ratio between the respective distances of the said needles at the said homothety centre before and after the said displacement and the said coefficient of optimum peripheral contraction; and a device for holding the said needles in positions normal to the said superimposed frames.
  • FIGS. 1 to 7 are diagrammatic side views, partly in section, illustrating the various steps of one embodiment for carrying out the method according to the invention
  • FIG. 8 is a schematic side view of apparatus for carrying out a semicontinuous method according to the invention comprising a pre-moulding of pockets from a continuous tape of cloth;
  • FIG. 9 is a vertical diametric section of a pre-moulding device for obtaining rough-shapings of circular shape and employing forming under vacuum, this device serving to determine the maximum peripheral contraction index of various cloths for covers to be integrated into cushions of polyurethane foam;
  • FIG. 10 is a plan view from below of a pre-moulding mould for asymmetric rough-shapings and shows the orientation and the length of various limit slots limiting the sliding of the peripheral cloth of a initially plane piece, within the limits of the optimum peripheral contraction coefficient, and the frame in which the slots are formed;
  • FIG. 11 is a partially diagrammatic perspective view of a rough-shaping obtained through pre-moulding of a piece of initially plane cloth, and shows the orientation of a part of the piece of cloth after premoulding of this rough-shaping and
  • FIG. 12 is a sectional view of a device for premoulding rough-shapings under vacuum of the same type as that shown in FIG. 9 but relating to a non-circular shape of rough-shaping as shown in FIG. 10, this device being equipped with driving needles for the cloth between the two superimposed parts of the frame, and with guide slots for the needles as shown in FIG. 10.
  • FIG. 1 shows a piece of cloth 1 coated on its upper face with an elastic plastics coating 1a, the cloth 1 being placed within a frame 2 having two superimposed parts. These two parts are assembled in such a manner that a slight sliding play is provided between them and the cloth, for example by providing an abutment on one of the parts of the frames. A sufficient amount of cloth is left extending from the frame to allow a further stamping and sliding of this cloth inward of its frame without the cloth detaching from the periphery of the frame.
  • the cloth is depressed centrally of the frame 2 by any suitable means, such as a die 3 as shown in FIG. 2, so as to cause it to slide marginally inwards to form a pocket 4 without causing any appreciable lengthening of the yarns of the cloth and without exceeding the limit at which plaits would necessarily result at the level of the frame 2, in spite of the possibilities of peripheral shrinkage of the cloth owing to relative movements of adjacent yarns or loops forming the same.
  • any suitable means such as a die 3 as shown in FIG. 2
  • the cloth is then fixed at the periphery thereof through any suitable means for example by means of two welding electrodes 5 incorporated in the frame 2 as shown in FIGS. 1 and 2.
  • the two parallel weld lines 6 thus obtained, which connects the adjacent yarns of the cloth to each other, are shown in FIG. 3.
  • the pocket 4 thus obtained is then removed from the frame 2 and is placed in a moulding frame 7 for forming under vacuum.
  • the border of the cloth is tightly clamped between a frame 8 and a gasket 9 resting on the upper part of the mould 7.
  • the mould includes a moulding surface 10 which has holes 11 through which the vacuum in the mould can be established, for example through a connection 12 in communication with a vacuum system, whereby a vacuum may be established in the space between the mould surface 10 and the pocket 4.
  • the pocket 4 to which the vacuum is applied then takes the form of the surface 10 as shown in FIG. 5, the yarns forming the cloth being stretched only sufficiently to avoid, after casting and polymerization of the foam, a considerable compression of this foam which would tend to modify the dimensions of the cushion obtained.
  • the vacuum may be disconnected without danger of air leaks during the casting and polymerization of the foam.
  • the mould is closed, for example by means of a lid 14 as shown in FIG. 6.
  • the foam 15 has polymerized it adheres to the cover 13 and the finished cushion 16 with an integrated cover can then be removed from the mould as shown in FIG. 7.
  • the border or periphery of the cover 13 which was located outside the mould can serve to secure the cushion to its support, for example an automotive seat frame.
  • FIG. 8 diagrammatically illustrates apparatus for carrying out in a semicontinuous manner the pocket forming stage of the method described above.
  • a continuous tape of cloth 17 supplied by a take-off bobbin 18 moves in the direction indicated by the arrow 19 to a tensioning roller 20 and an idling roller 21 on a working table having at least one frame 2 of the type described above.
  • a die 3 of suitable shape descends into the frame 2 to form a cloth pocket 4 as described above.
  • the cloth is fixed in this form by means of welding electrodes 5 incorporated in the frame 2.
  • a cut-off knife 22, the fixed part of which is mounted on a support 23, is then actuated to cut off the cloth around the frame 2.
  • the frame 2 as well as the knife 22 are then simultaneously opened and the pocket 4 falls into a container 24 arranged below the working table, while the die 3 ascends.
  • the cloth tape 17 can then move forward again for the formation of a new pocket 4, while the part of the tape from which the preceding pocket has been cut away is wound on a bobbin 27 via an idling roller 25 and a tensioning roller 26.
  • the pocket-forming cycle is then repeated with the same sequence of operations.
  • Such a pre-forming device can supply at the required speed an industrial plant for the manufacture of foam cushions with integrated covers by making use of quick-disconnect connections and tight unions, thereby allowing easy disengagement of the moulds for the formation under vacuum from the vacuum producing system after the casting of the foam has been effected.
  • FIG. 9 shows a mould 7a for forming under vacuum, which mould is circular in shape and supports, through a connection 28, two separated frames 8 and 9 which are urged one towards the other by means of springs 29 which may be adjusted in such a manner as to allow deformation under vacuum of a length of cloth 1 through sliding of its peripheral part between the frames 8 and 9, and has a quick-disconnect valve connection 12a connected to a vacuum system.
  • the cloth 1 is previously made air tight by means of a thin plastics film formed on its lower face and the formation under vacuum is terminated when plaits are formed between the two frames 8 and 9 and near these frames, after the periphery of the inner borders 8a, 9a and/or the outer borders 8b, 9b of these frames have been marked on the cloth.
  • the frames 8 and 9 do not have welding electrodes similar to the electrodes 5 shown in FIGS. 1 and 2, because the purpose in this case is not to preform a rough-shaping but simply to determine a maximum peripheral contraction index equal to the ratio of the diameters of the cloth length at the level of the internal and/or external borders, before and after the formation under vacuum.
  • FIG. 10 shows an upper frame 8c of asymmetric shape and pertains to the manufacture of cushions for seats for drivers of motor vehicles and not for seats before being completed and symmetric in shape with respect to the longitudinal symmetry plane of such vehicles.
  • the frame 8c has a radial width considerably increased towards the lower part of FIG. 10 corresponding to the front of the driving seat. This width is approximately double that at the rear of the same cushion, as may be determined by comparing the segments BB' and AA'.
  • slots 30 allow the sliding of the cloth between two superimposed frames 8c and 9c to be limited, and all converge to a point 0 which is the homothety centre of two geometric locations 30c and 30d indicated by broken lines of the inner and outer ends 30a and 30b of the slots 30.
  • the homothety centre 0 is spaced from the part of the corresponding frame at the front of the cushion which is substantially equal to twice its distance to the corresponding part of the frame corresponding to the rear of this cushion, i.e. OA' is substantially equal to half OB' while OA and AA' are substantially equal to half OB and BB'.
  • the axis 31 on which the point 0 lies represents the intersection of a vertical symmetry plane relative to the left hand and right hand side of the superimposed frames 8c and 9c.
  • the series of slots 30 are then arranged in pairs on the left and right sides of the frame at locations, for each pair, determined by lines drawn across the frame parallel to the transverse ends (8f and 8g) of the frame.
  • this axis leads to the intersection point between the lateral borders 8d and 8e.
  • the centre of homothety 0 is then defined in the transverse direction (i.e., left to right as seen in FIG. 10) by a vertical plane passing through the axis 31, and in the longitudinal direction (i.e., top to bottom as seen in FIG. 10) by a convenient ratio between the segments OA' and OB' which correspond for example to a double thickness of the front part of the cushions with respect to the thickness of their rear part. That is, if the forward edge of the cushion is to be twice as thick as the back of the cushion, then OB' is approximately twice OA'.
  • the border 32 is retracted to lie between the frames 8c and 9c at a position which has not been shown in FIG. 10 but is preferably adjacent the ends 30b of the slots 30.
  • the constant ratio between the respective distances from the homothety centre 0 to the ends 30a and 30b of the various slots 30 is equal to the respective homothety ratio, i.e. the geometric location 30d is homothetic of the geometric location 30c and the ratio between the respective lengths of these two geometric locations is equal to the optimum peripheral contraction index.
  • a part of the horizontal length of cloth 1 initially located between two adjacent slots 30 and as shown at CDC'D' in FIG. 11 is substantially oriented after performing in a vertical plane at C'D'C"D", as is also shown in FIG. 11, and forms a part of the rough-shaping.
  • the homothety ratio mentioned above which is defined as being equal to CD/C'D' is also equal to the ratio OC/OC' corresponding to a determined slot 30, while the ratio OD/OD' corresponds to the adjacent slot 30.
  • peripheral contraction at the level of the segment CD has modified the shape of the piece of cloth.
  • the device shown in FIG. 12 allows the sliding of the cloth at the level of two slots of a length substantially equal to each other and arranged one on the extension of the other, to be limited on either side of the homothety centre 0.
  • needles 33 crossing the cloth length 1 can move along the inner borders 30a and the outer borders 30b of two slots 30, these needles being slidably maintained in the frames 8c and 9c until the needles 33 abut against the inner borders 30a of the slots 30.
  • connection 12b has to overcome the action of two springs 34 which tend to maintain the cloth in a tensioned position throughout the surface within the outer border 30b of the slots.
  • springs 34 are mounted on guide axes 35 of the needles 33.
  • a rubber perforated membrane 36 is provided below this lower frame.
  • the length of cloth 1, which has been previously tightened may be stamped without difficulty upon preforming the rough-shaping, thereby compressing the springs 34.
  • the guide axes 35 have abutments 35a at their rear part which allow optimum adjustment of the sliding of the cloth and the stroke of the needles at the level of each single slot 30 and they may be blocked in position by any suitable means.
  • a cushion of flexible polyurethane foam having an integrated cover formed of a knitted fabric of "Nylon” which can be cold extended with dimensions of 40% and 30% respectively, i.e. its surface can be increased by a maximum of 82% by stretching it but has on average a possibility of linear return of the order of 30% in all directions.
  • the cloth had been rendered air tight in a conventional manner by adhesion of a PVC film of 50 microns thickness.
  • the method according to the invention can be easily applied to knitted fabrics which are cold extensible, and also to conventional chain and weft thermoplastic fabrics which require a given temperature increase for their formation under vacuum.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Buffer Packaging (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Springs (AREA)
US05/540,555 1974-01-15 1975-01-13 Manufacture of cushions Expired - Lifetime US4046611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/804,871 US4137030A (en) 1975-01-13 1977-06-09 Apparatus for the manufacture of cushions

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR7401274A FR2257536A1 (en) 1974-01-15 1974-01-15 Soft foamed plastic cushion for automobile seating - by preforming textile piece, placing in mould, and filling with foamable material
FR74.01274 1974-01-15
FR7412661A FR2267280A2 (en) 1974-04-10 1974-04-10 Soft foamed plastic cushion for automobile seating - by preforming textile piece, placing in mould, and filling with foamable material
FR74.12661 1974-04-10

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/804,871 Division US4137030A (en) 1975-01-13 1977-06-09 Apparatus for the manufacture of cushions

Publications (1)

Publication Number Publication Date
US4046611A true US4046611A (en) 1977-09-06

Family

ID=26218132

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/540,555 Expired - Lifetime US4046611A (en) 1974-01-15 1975-01-13 Manufacture of cushions

Country Status (9)

Country Link
US (1) US4046611A (de)
JP (1) JPS5915669B2 (de)
BR (1) BR7500234A (de)
DD (1) DD117426A5 (de)
DE (1) DE2500365C2 (de)
ES (2) ES433800A1 (de)
GB (1) GB1466531A (de)
IT (1) IT1032560B (de)
SE (1) SE407674B (de)

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152385A (en) * 1978-01-05 1979-05-01 Tabler Charles P Side paper clamping for continuous foam sheet production
US4247347A (en) * 1979-03-19 1981-01-27 Lischer James F Process for molding cloth including a fabric layer by heating to at least the greater of the set or softening temperature the stitches thereof having never been set, and molding a cloth covered foam filled product
US4247348A (en) * 1979-03-19 1981-01-27 Sears Manufacturing Company Process for molding cloth including a fabric layer, the stitches thereof having never been thermally set and molding a cloth-covered foam filled product
US4264386A (en) * 1979-03-19 1981-04-28 Sears Manufacturing Company Process for molding a cloth in a hot mold and molding a cloth covered foam filled product
US4323406A (en) * 1979-04-27 1982-04-06 Sergio Morello Manufacturing process for covering panels, and panels obtained with this process
US4450122A (en) * 1979-10-09 1984-05-22 Rolando Gallina Method and apparatus for manufacturing foot supports with anatomically contoured shank portions
US4486368A (en) * 1982-09-30 1984-12-04 Texas Recreation Corporation Method of making a composite foamed resin ski
US4556375A (en) * 1982-09-30 1985-12-03 Texas Recreation Corporation Apparatus for making water skis
US4637789A (en) * 1985-05-13 1987-01-20 Netznik Frederick P Cushion fabrication apparatus
EP0218038A1 (de) * 1985-09-14 1987-04-15 Dunlop Limited Form zur Herstellung von vakuumgeformten, beschichteten Gegenständen
US4718153A (en) * 1986-04-10 1988-01-12 Steelcase Inc. Cushion manufacturing process
US4758294A (en) * 1987-07-10 1988-07-19 Helmut Storch Process for the production of a foam backed article
US4806302A (en) * 1983-08-12 1989-02-21 Taa Technique And Administration Ag Method of manufacturing sailboards and surfboards
US4824070A (en) * 1987-09-30 1989-04-25 Ikeda Bussan Co., Ltd. Mold assembly for producing skin-covered foamed plastic article
US4998354A (en) * 1990-06-20 1991-03-12 Pin Dot Products Mechanical shape sensor
DE3930526A1 (de) * 1989-09-13 1991-03-21 Grammer Ag Verfahren zur herstellung eines hinterschaeumten polsterteils und vorrichtung zur durchfuehrung des verfahrens
US5017114A (en) * 1987-11-18 1991-05-21 Bayer Aktiengesellschaft Device for manufacturing foam cushions with a covering
US5176860A (en) * 1988-07-11 1993-01-05 Atoma International Of America, Inc. Method of the manufacture of an upholstery element
US5193285A (en) * 1991-08-01 1993-03-16 Pin Dot Products Mechanical shape sensor and data recorder
US5558731A (en) * 1994-12-19 1996-09-24 Davidson Textron Inc. Method for fabricating vinyl covered foamed parts
US5565053A (en) * 1992-07-30 1996-10-15 Gebr. Happich Gmbh Method of manufacturing a plastic molding
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US7396082B2 (en) 2002-03-29 2008-07-08 Garrex Llc Task chair
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US7625046B2 (en) 2002-03-29 2009-12-01 Garrex Llc Task chair
US20140291880A1 (en) * 2013-03-29 2014-10-02 Toyota Boshoku Kabushiki Kaisha Manufacturing method for conveyance seat
US20160176364A1 (en) * 2014-12-18 2016-06-23 Faurecia Interior Systems, Inc. Vehicle interior panel with sculpted surface
US20220041082A1 (en) * 2018-09-27 2022-02-10 Bayerische Motoren Werke Aktiengesellschaft Method for Producing a Seat Cover for a Vehicle Seat Made of a Form-Fit Knit Part

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US4450122A (en) * 1979-10-09 1984-05-22 Rolando Gallina Method and apparatus for manufacturing foot supports with anatomically contoured shank portions
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US4556375A (en) * 1982-09-30 1985-12-03 Texas Recreation Corporation Apparatus for making water skis
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US6726286B2 (en) 1992-06-15 2004-04-27 Herman Miller, Inc. Seating structure having a fabric with a weave pattern
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US6733080B2 (en) 1992-06-15 2004-05-11 Herman Miller, Inc. Seating structure having a backrest with a flexible membrane and a moveable armrest
US6059368A (en) * 1992-06-15 2000-05-09 Herman Miller, Inc. Office chair
US6125521A (en) * 1992-06-15 2000-10-03 Herman Miller, Inc. Process for making an office chair
US7594700B2 (en) 1992-06-15 2009-09-29 Herman Miller, Inc. Contoured seating structure
US6386634B1 (en) 1992-06-15 2002-05-14 Herman Miller, Inc. Office chair
US6588842B2 (en) 1992-06-15 2003-07-08 Herman Miller, Inc. Backrest
US5565053A (en) * 1992-07-30 1996-10-15 Gebr. Happich Gmbh Method of manufacturing a plastic molding
US5558731A (en) * 1994-12-19 1996-09-24 Davidson Textron Inc. Method for fabricating vinyl covered foamed parts
US6120630A (en) * 1995-11-13 2000-09-19 Milsco Manufacturing Company Method of making a seat cushion
US5743979A (en) * 1995-11-13 1998-04-28 Milsco Manufacturing Company Method of forming fabric
EP0773095A2 (de) 1995-11-13 1997-05-14 Milsco Manufacturing Company Verfahren zum Formen von Textilauskleidung und Giessen des Schaumstoffkerns
US5851457A (en) * 1996-06-28 1998-12-22 Steelcase Inc. Method of forming an upholstered foam plastic seat cushion
US6007150A (en) * 1998-03-08 1999-12-28 Milsco Manufacturing Company Motorcycle seat with adjustable backrest
EP1127676A3 (de) * 2000-02-28 2003-11-12 Paul Kiefel Gmbh Vorrichtung zum Verformen von thermoplastischen Materialien
EP1127676A2 (de) * 2000-02-28 2001-08-29 Paul Kiefel Gmbh Vorrichtung zum Verformen von thermoplastischen Materialien
US6983997B2 (en) 2001-06-29 2006-01-10 Haworth, Inc. Chair having a suspension seat assembly
US7625046B2 (en) 2002-03-29 2009-12-01 Garrex Llc Task chair
US7396082B2 (en) 2002-03-29 2008-07-08 Garrex Llc Task chair
US7040703B2 (en) 2002-03-29 2006-05-09 Garrex Llc Health chair a dynamically balanced task chair
US6685862B1 (en) 2002-08-28 2004-02-03 Corbin Pacific, Inc. Method of making a vehicle seat
US20040137811A1 (en) * 2003-01-09 2004-07-15 L & P Property Management Company Elastomeric seating composite
US20050025954A1 (en) * 2003-07-30 2005-02-03 Sullivan Alfred Hardy Cloth backing for use in a trim cover
US8685514B2 (en) 2004-10-22 2014-04-01 Dow Global Technologies Llc Composite pipes and method making same
US20080261471A1 (en) * 2004-10-22 2008-10-23 Dow Global Technologies Inc. Polyolefinic Materials for Plastic Composites
US8043696B2 (en) 2004-10-22 2011-10-25 Dow Global Technologies Llc Microlayer structures and methods
US7887660B2 (en) 2004-10-22 2011-02-15 Dow Global Technologies Inc. Composite pipes and method making same
WO2006047366A1 (en) * 2004-10-22 2006-05-04 Dow Global Technologies Inc. Apparatus and process for manufacturing shaped plastic reinforced composite articles
US20110114215A1 (en) * 2004-10-22 2011-05-19 Dow Global Technologies Inc. Composite pipes and method making same
US20080265464A1 (en) * 2004-10-22 2008-10-30 D Hooghe Edward L Apparatus and Process for Manufacturing Shaped Plastic Reinforced Composite Articles
US20080265457A1 (en) * 2004-10-22 2008-10-30 Mcleod David G Plastic Composite Articles and Methods of Making Same
US9227346B2 (en) 2004-10-22 2016-01-05 Dow Global Technologies Llc Plastic composite articles and methods of making same
US9314187B2 (en) 2007-11-12 2016-04-19 Trek Bicycle Corporation Bicycle seat sizer and positioning device
US20090124935A1 (en) * 2007-11-12 2009-05-14 Staszak Jeffrey R Bicycle Seat Sizer And Positioning Device
US20140291880A1 (en) * 2013-03-29 2014-10-02 Toyota Boshoku Kabushiki Kaisha Manufacturing method for conveyance seat
US10611065B2 (en) * 2013-03-29 2020-04-07 Toyota Boshoku Kabushiki Kaisha Manufacturing method for conveyance seat
US20160176364A1 (en) * 2014-12-18 2016-06-23 Faurecia Interior Systems, Inc. Vehicle interior panel with sculpted surface
CN105711112A (zh) * 2014-12-18 2016-06-29 佛吉亚汽车内部系统公司 具有雕刻表面的车辆内部面板
US10471910B2 (en) * 2014-12-18 2019-11-12 Faurecia Interior Systems, Inc. Vehicle interior panel with sculpted surface
CN105711112B (zh) * 2014-12-18 2020-03-10 佛吉亚汽车内部系统公司 具有雕刻表面的车辆内部面板
US20220041082A1 (en) * 2018-09-27 2022-02-10 Bayerische Motoren Werke Aktiengesellschaft Method for Producing a Seat Cover for a Vehicle Seat Made of a Form-Fit Knit Part
US11850983B2 (en) * 2018-09-27 2023-12-26 Bayerische Motoren Werke Aktiengesellschaft Method for producing a seat cover for a vehicle seat made of a form-fit knit part

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Publication number Publication date
DE2500365C2 (de) 1982-07-29
SE407674B (sv) 1979-04-09
ES433800A1 (es) 1977-04-01
GB1466531A (en) 1977-03-09
JPS50102462A (de) 1975-08-13
SE7500177L (de) 1975-07-16
IT1032560B (it) 1979-06-20
BR7500234A (pt) 1975-11-04
JPS5915669B2 (ja) 1984-04-11
DE2500365A1 (de) 1975-07-17
DD117426A5 (de) 1976-01-12
ES453357A1 (es) 1978-02-16

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